this post was submitted on 14 Jun 2025
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[–] loveknight@programming.dev 15 points 22 hours ago* (last edited 19 hours ago) (1 children)

Or get a used thin client (e. g. HP T620, T630, T640 or Dell Wyse 5070). Cost: ~40-100$. Biggest advantage: Passive cooling, i. e. they're absolutely quiet.

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[–] j4yt33@feddit.org 84 points 1 day ago (5 children)

Get them from where? I always read about these basically-free computers but have yet to see one

[–] undead@lemmy.ca 25 points 1 day ago (3 children)

Facebook marketplace, kjiji, etc

[–] BlueSquid0741@lemmy.sdf.org 45 points 1 day ago (4 children)

Everyone here thinks their shit tier 2018 laptop is made of gold or something.

[–] not_amm@lemmy.ml 8 points 19 hours ago

Same here in México, a lot of people think their dual core Intel from 2011 (and even older than that) is still worth more than +$100USD. Even worse, companies usually want to resell devices to recover some of the cost, so even that option is kind of expensive. I'm waiting for some friends that can buy company devices for cheap so they can resell them to me for cheap too lol

[–] Diurnambule@jlai.lu 2 points 15 hours ago

Pawn shop I would say but they are expensive too... Their is some carricatibe structure which refurbish computers and sell them gor dirt cheap. 20 Buck per tower. But that crapy computers.

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[–] ramenshaman@lemmy.world 25 points 1 day ago (2 children)

I wouldn't touch Facebook with a 10' ethernet cable. Haven't heard of kjiji, I'll have to check it out.

[–] LaLuzDelSol@lemmy.world 2 points 16 hours ago

You're missing out, Facebook marketplace is THE place to buy local secondhand goods for dirt cheap without getting scammed. You do need an account but you don't need to install anything, and the payments are not done through FB

[–] kent_eh@lemmy.ca 7 points 22 hours ago (1 children)

Haven't heard of kjiji, I'll have to check it out.

It's essentially Craigslist, but in Canada.

Craigslist doesn't really have a user base here.

[–] Tm12@lemmy.ca 5 points 20 hours ago (1 children)

Except in Vancouver. It’s a Craigslist city.

[–] kent_eh@lemmy.ca 4 points 16 hours ago

Interesting.. I wonder why?

[–] errer@lemmy.world 13 points 1 day ago

Did someone fall asleep on the keyboard when they came up with kjiji?

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[–] catty@lemmy.world 8 points 20 hours ago* (last edited 20 hours ago) (6 children)

I dislike posts like this. Technology moves quickly. PIs are great for hobby electronics where you need a little computer. Want a cheap computer to run a few things 24/7 and know what you're doing? Pi it is. You don't need to run containers on a pi because you have the skills to install the dependencies manually. They cost pennies to run 24/7.

I think of pis as beefed-up calculators. I have made lots of money using a pi zero running code I needed to run 24/7. Code I developed myself.

Having an old laptop with outdated parts taking up lots of space, weighing a lot, and having components like fans, keyboard, and mousepad most-likely soon dying and needing replacing is an additional concern you don't want.

Someone below saying use an old laptop if you're living with parents and don't pay the electricity bill is a bit lame. Do your part for the world. Someone will be paying for it.

Ultimately, use what you want but if you're just starting with servers, use a virtual machine on your computer and log in to it. You can dick about with it as much as you want, and reset back to a working state in seconds.

[–] CmdrShepard49@sh.itjust.works 6 points 19 hours ago (2 children)

I think this really depends on the model they're eyeballing because the Pi5 is frankly ridiculous for the price and has absurd power requirements (5V5A USB?). I wouldn't recommend one of these unless you have a specific need like a certain hat or the GPIO pins. You can get a Dell micro Optiplex for less money and have a full fledged i5 or i7 processor with similar power usage.

Plus the RPi Foundation exposed themselves as the greedy bastards they are during COVID which is yet another reason to turn your back on them.

For something like a Pi Zero, maybe go for it, but there are similar devices out there from other companies too.

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[–] jol@discuss.tchncs.de 124 points 1 day ago (2 children)

It's not just the size constraint. The power usage is significant...

[–] bizarroland@lemmy.world 75 points 1 day ago (8 children)

If you have the lid closed, you're looking at 3 to 15 watts to have a laptop running in the background doing some basic server shit.

Maybe a little more under high load, but those are going to be intermittent and not constant.

I'm just saying it's not that much more electricity usage, and the recycling more than offsets the CO2.

[–] MoogleMaestro@lemmy.zip 56 points 1 day ago

If you have the lid closed, you’re looking at 3 to 15 watts to have a laptop running in the background doing some basic server shit.

Not all laptops make effective use of power with the lid closed, sadly. Not saying this as a correction, but for others to know that they need to make sure these settings are available in the bios of the system they are buying.

[–] RvTV95XBeo@sh.itjust.works 26 points 1 day ago (3 children)

Laptop performance when closed is quite variable, but depending on where you live, each 10W of idle consumption 24/7/365 could cost you somewhere around $20/yr (assumes @$0.20/kWh, YMMV). This isn't overwhelming on it's own, but it is "cost difference between a junked laptop and a Raspberry Pi" kinda money.

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[–] polle@feddit.org 60 points 1 day ago (14 children)

Where are these cheap e waste laptops with gpio and actually low power?

[–] CmdrShepard49@sh.itjust.works 3 points 19 hours ago

The market is about to be flooded with them with Windows 10 going EoL in October.

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[–] IndustryStandard@lemmy.world 5 points 19 hours ago

Rockchip boards are way more efficient than Pis

[–] tasankovasara@sopuli.xyz 22 points 1 day ago (5 children)

The only caveat here is the fire-hazard non-removable lithium batteries.

[–] sxan@midwest.social 18 points 1 day ago (3 children)

This is, in my mind, one of the benefits of laptops over micro computers: integrated UPS. Even an old, degraded battery will probably get you a couple of hours with the screen off.

IME, power consumption is going to be worse overall, for any laptop likely to be in the recycle bin, it's probably double the consumption of an ARM SBC. The integrated UPS and usually decent power conditioning of the power supply saves you more money with a laptop. Plus, keyboard and screen for emergencies - I just generally expect that, over there life of a micro I'm going to have to drag out and plug in a spare keyboard, mouse, and monitor because something in a device, or an upgrade, or BIOS flash, is preventing a boot.

There are a lot of good reasons to use laptops instead of SBCs, if you don't mind the extra power draw and (as she says) don't have size requirements.

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[–] elucubra@sopuli.xyz 13 points 1 day ago (3 children)

Replacement is usually removing 6-10 screws and prying the case with a guitar pick or old credit card. There is most likely a disassembly video on youtube. Batteries from aliexpress or the like are usually cheap (although probably more expensive than the computer). Depending on the application, the "built-in UPS" can be nice.

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[–] BananaTrifleViolin@lemmy.world 19 points 1 day ago (1 children)

Low power and arm architecture are big differentiators between Pi and laptops.

I totally agree recycle laptops where possible, but they're generally noisier and less energy efficient plus the battery degrades over time and is a fire risk.

They're not necessairly a good fit for always-on server or service type uses comparef to a small board like Raspberry Pi. But a cheap or free second hand laptop is definitely good for tweaking, testing and trying our projects.

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[–] BrightCandle@lemmy.world 22 points 1 day ago (2 children)

It's low power that is still making arm small computers popular. It's impossible to get a pc down into the 2-5 Watt power consumption range and over time it's the electrical costs that add up. I would suggest the RPI5 is the thing to get because it's expensive for what it is and more performance is available from other options supported by armbian.

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[–] wolfinthewoods@lemmy.ml 4 points 19 hours ago

Some are talking about power consumption in this thread and I've had similar ideas. Gone are the days where I can run a beefy spec'd desktop in good conscience, it's just such a resource hog. I have a laptop that stays in hibernate mostly. My other idea for a low power consumption home computer was to get a Le Potato single board and pair that with an e-ink monitor (there's some really nice ones out there) which I think was sitting at maaaaybe ~5kwh. I think the more we can limit our power consumption, the better, all that electricty directy translates into coal being burned and additional CO2 being created. I'm no luddite, but it has impacted how I consume media which is now very mindful of the impact watching a few episodes/playing a couple hours of games versus just one or two hours of content on any given day.

[–] Kalcifer@sh.itjust.works 37 points 1 day ago (3 children)
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[–] NostraDavid@programming.dev 4 points 20 hours ago (1 children)

I now have a stack of Thinkpads laying around. Right next to my two RPis 😂

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[–] HumanPenguin@feddit.uk 6 points 22 hours ago* (last edited 22 hours ago) (1 children)

Add use of gpio to reasons to use pie.

While gpio adaptors are available for pc. The software architecture is not as well rounded and documented.

So for any complex hardware project development. Gpio based SBCs are often essential.

So space, low power and gpio development.

Otherwise yep old laptop or even desktop can be cheaper and more able.

But overall. The wide software support and documentation for hardware connectivity is a bloody good reason to keep pie supported.

I'm setting 2 up to control the hot water and solar dump system on my shared little boat. As I want to link 12v Lifepo4 batt charging with the solar dump and visually impaired control for AC and diesel heating of the water.

Pies really are the best option to play with. While low power and easy to design a unique low vision interface.

Also UK boat safty. Is issuing warning about permanently connected li ion batts on boats. So it is likely setting up a laptop to manage this while not on the boat. Will be banned in the near future.

Only an issue for UK boating but worth considering the risks of leaving laptops to run when not observed.

[–] CmdrShepard49@sh.itjust.works 3 points 19 hours ago (1 children)

I bet you could instead use an ESP32 for GPIO and just connect it remotely to whatever Pi alternative you use (if needed at all). Turning some switches on and off while monitoring input values doesn't sound very computationally intensive.

[–] HumanPenguin@feddit.uk 2 points 18 hours ago (1 children)

Yep that can work. But ignores all the well documented and supported development community comments I pointed to while also indicating other options exist.

As for.

Turning some switches on and off while monitoring input values doesn’t sound very computationally intensive.

You realise IO wise that describes your keyboard and mouse interaction on the most powerful gaming PCs.

It's what you do with the results that matters.

GPIO supports a fair bit more then the on and off input and output. It's slow compared to other systems. But has multiple serial protocols of differing types. Simple GUI displays can also be run via gpio connections. Low Res Lidar devices are available connected via the spi connections with all the data processed on that host PC.

So no gpio use can require all levels of processing power post connection. It is after all designed for experimentation and prototyping.

For my project. You clost to correct. I just use a simple GUI displays with xorg. So a pie 0 is plenty. And way lower power then the other options. It links to a pwm controller to power 2 12v 200w water tank heaters a relay for a 750w AC heater. Bluetooth connection to a BMS and solar MPPT. While operating multiple temp sensors measuring at different levels. And warning of legionaries risk. If the tank has not been over 65c in 14 days (actually 10 days but I'm over careful given the health status of my brother and I).

So much less then the tiny Pie 0 would not be able to cope but mainly due to the need for the vision impaired interface. Speaking functions dose not take much. But doing so without being unusably slow is about the limit of a pie 0.

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[–] princessnorah@lemmy.blahaj.zone 32 points 1 day ago (11 children)

The power constraints are more important to most than the size constraints honestly.

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[–] glitching@lemmy.ml 21 points 1 day ago (2 children)

raspberries were viable while those were cheap. I think I got a 3b (plus?) in pre-deficit years for like $25 second-hand AND I got some shitty case AND a microSD card AND it could run off of a somewhat normal USB phone charger. so using those instead of a 10 year old decommissioned desktop was an awesome value proposition.

nowadays, those devices are encroaching on trip-digits territory and the power adapter is like $30. the computing power you can buy for a third of that designates raspberries exclusively for niche use cases where footprint and power consumption are primary considerations.

not to mention fake Jason Statham just rubs me the wrong way, like all them "visionaries". he makes this sound like he's the head of Feed Africa or something, on a noble mission to save humanity and whatnot.

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[–] j4k3@lemmy.world 30 points 1 day ago* (last edited 1 day ago) (2 children)

You lose the I/O and power efficiency is no comparison. You can get better power efficiency and sometimes some I/O with an old router and OpenWRT, but you'll be in the class of a Beagle Bone and a much harder learning curve. I've never managed to get a sensor or peripheral working on some old laptop's SPI or I2C buses like how easy it is on a Rπ.

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